Skype 2.7 Beta for Mac OS X was released a few days ago and, in case you missed it, the popular VOIP service now plays nicely with Leopard and offers 640×480 video if your camera can handle it.
"Leopard compatible – if you have the latest Mac OS X 10.5 then you can use Skype with confidence.
Better video resolution – your video conversations are now set at a whopping 640 x 480 pixels by default with up to 25 frames per second. If your webcam can handle this resolution you’ll soon be appearing in an improved and bigger format on friends screens."
Download Skype Beta for Mac OS X [Skype]